#include “iomanip” #include <iostream> using namespace std; bool to_int(double value,int & amp; res){ res=int(value); //If the result is min_int/max_int, there is a high probability that the value exceeds the limit, unless the value is exactly equal to 2147483647/-2147483648 return (res > -2147483648 & amp; & amp; res < 2147483647); } string double_to_string(double value,int decimal,bool append_zero) […]
Tag: double
SpringBoot AOP + Redis delayed double deletion to ensure data consistency
SpringBoot AOP + Redis Delayed double deletion ensures data consistency 1. Business scenario 1.1 Problems When using Redis as a cache, there will be inconsistencies between the data in Redis and the database data. In the subsequent query process, it will take a long time to check Redis first, thus The occurrence of queried data […]
C language implements backgammon (single player, networked double player, human-computer, regret game, replay, prompt)
I would like to share with you my previous big homework in C language. When I have time, I will break it down and write a detailed note. #undef UNICODE #undef _UNICODE #include <stdio.h> #include <WinSock2.h> #include <WS2tcpip.h> #pragma comment(lib,”ws2_32.lib”) #include <windows.h> #include<mmsystem.h> #include<graphics.h> #pragma comment(lib,”Winmm.lib”) IMAGE bgp; MOUSEMSG m; int n_x = 0, n_y […]
Spring Boot + Redis delayed double deletion function, actual combat is here!
Because the official account has changed the push rules, please click “Looking” and add “star” to get exciting technology sharing as soon as possible Click to follow the #InternetArchitect official account and get the full set of architect information here 0,2T architect learning materials dry content Previous article: Sharing of useful learning materials for 2T […]
“The Third Level of Algorithm Clearance Village – The Magical Use of Double Pointers”
Directory: Understand how the double pointer idea works (fast and slow type and collision type) Understand how double pointers solve the problem of deleting elements Understand how dual pointers solve the odd-even movement problem Understand how double pointers solve array rotation problems Understand how pointers solve interval-related problems Understand how double pointers solve string substitution […]
Algorithm Clearance Village – The Magical Use of Double Pointers
Remove all elements with value equal to val in place Given an array nums and a value val, you need to remove all elements whose value is equal to val in place and return the new length of the array after removal. Requirement: Do not use extra array space, you must use only O(1) extra […]
2023/10/26–C#–Null, double question mark? ? , immutable array, multidimensional array, traversal array
1.Null // Features: //1. Indicates a null reference that does not refer to any object, no memory space is created, and a null reference pointer is stored; //2.Null type is System.Nullable the type of this struct //3. For value types, the assignment cannot be directly null, but the reference type can //4.Default value of null […]
SpringBoot AOP + Redis delayed double deletion function in practice
<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-redis</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-aop</artifactId> </dependency> /** *Delayed double deletion **/ @Retention(RetentionPolicy.RUNTIME) @Documented @Target(ElementType.METHOD) public @interface ClearAndReloadCache {<!– –> String name() default “”; } @Aspect @Component public class ClearAndReloadCacheAspect {<!– –> @Autowired private StringRedisTemplate stringRedisTemplate; /** * entry point *Entry point, entry point implemented based on annotations. Those with this annotation are all […]
Amazing, this html5 player supports video switching, double-speed switching, and video preview
Very cool! ! This article will explain the functions related to video playback (based on cloud platform), including initializing the player, setting player size, video switching, double speed switching, video preview, customizing the start/end time of video playback, prohibiting drag and drop progress, Player skin, control buttons, playback controls, etc. Picture / html5 video player […]
Interface request merging skills, once used, the efficiency will be doubled!
The path to growth as a programmer Internet/Programmer/Technology/Data Sharing focus on This article should take approximately 3.5 minutes to read. From: blog.csdn.net/leilei1366615/article/details/123858619 1. What is request merge In WEB projects, we generally use HTTP protocol to handle requests Then the way we interact with the server will be like this, one request, one processing We […]